Abd-al-Aziz is proclaimed King of the Hijaz Abd-al-Aziz is proclaimed King, Saudi Arabia Abd-al-Aziz takes the title Sultan of Najd Al Sa'ud family are exiled to Kuwait Consultative Council inaugurated, Saudi Arabia Extremists seize the Grand Mosque of Mecca Ikhwan turn against Abd-al-Aziz King Abd-al-Aziz dies, Saudi Arabia King Faysal is assassinated by his nephew King Sa'ud is deposed by his brother Oil is discovered, Saudi Arabia Ottomans take control of the province of Hasa Sa'ud, is named Crown Prince, Saudi Arabia Saudi and Iran sign major security accord Saudi Arabia condemns the Iraqi invasion of KuwaSaudi Arabia is a founder member of the GCC Saudi Arabia is a founding member of OPEC Saudi Arabia leads an oil boycott Saudi Arabia severs diplomatic relations with EgSaudi attacks Iraq The Ikhwan (Brotherhood) is founded The OIC founded in Jiddah, Saudi Arabia